Though calendar types vary from tribe to tribe, nearly all tribal calendars begin in the spring; to Native people, spring symbolizes the start of a new year through the birth of new plant and animal life.

Every three years, an additional moon is added to help the Indian calendar coincide with traditional non-Indian calendars.

Some months in the Native American calendar have multiple names for moons. This could be caused by different tribes involved in naming moons, different translations of the same name or the overlapping of more than one moon in the same calendar month.

Wetú — The Moons of Renewal and Growth (Spring)
Each spring, the camp circle moved to higher ground. Men fixed and created weapons and resumed hunting. Women gathered early berries and roots and repaired the tipis. Children enjoyed the warm weather after the confines of winter.

Blokétu — The Warm Moons (Summer)
During summer, the camp circle followed the migrating buffalo and moved often. Women worked to maintain the camp and were responsible for transporting and unpacking the family’s belongings; they also prepared food and made and set up tipis. Girls helped gather firewood and water and received instruction in quillwork decoration. Boys practiced their hunting skills on small animals. Men made weapons, hunted for game and defended the camp. Summer was also a time of celebrations and ceremonies.

Wípazuka Wasté Win — Moon of the June BerriesCanpásapa Wi — Moon When the Chokecherries Are RipeWasúton Wi — Moon of the Harvest

Ptanyétu — The Moons of Change (Autumn)
As summer gave way to fall, the Lakota got ready for winter. Food was gathered to last the winter season. Women prepared meat from the buffalo that the men hunted. Underground storage caches were filled with dried meat and fruit, and large quantities of firewood were stocked.

Waniyetu — The Cold and Dark Moons (Winter)
Winter signaled the beginning of a quieter time, during which a single camp site was used for the season. While women made and mended clothing, men went on raiding parties to ensure the camp’s safety and strength. Winter was also a time for fun. Children gathered around the fire to listen to the words of their grandparents. Lakota elders preserved community history by telling stories and recounting past times. There also was time for games, dancing and visiting.